DISPLAY DRIVER INTEGRATED CIRCUIT INCLUDING A PRE-DECODER AND OPERATING METHOD THEREOF

摘要

PURPOSE: A display driving circuit including a pre-decoder and a driving method thereof are provided to control a slew rate of outputted gradation data by performing a pre-decoding operation. CONSTITUTION: A gradation voltage generator(140) receives at least one gamma reference voltage and generates a plurality of gradation voltages. A main decoder(122) receives the gradation voltage and the data from the outside and selectively outputs the gradation voltage. A pre-decoder(121) outputs the pre-charge voltage by decoding a part of data. An output buffer(130) outputs the gradation data for driving the display device. The pre-decoder receives and buffers a part of the gradation voltages. A switch unit(123) supplies the output of the pre-decoder and the main decoder to the output buffer.